10665124778 has 32 divisors (see below), whose sum is σ = 19950710400. Its totient is φ = 4154088960.

The previous prime is 10665124747. The next prime is 10665124781. The reversal of 10665124778 is 87742156601.

It is a super-2 number, since 2×10665124778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730898 + ... + 745346.

It is an arithmetic number, because the mean of its divisors is an integer number (623459700).

Almost surely, 2^10665124778 is an apocalyptic number.

10665124778 is a deficient number, since it is larger than the sum of its proper divisors (9285585622).

10665124778 is a wasteful number, since it uses less digits than its factorization.

10665124778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19262.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 10665124778 in words is "ten billion, six hundred sixty-five million, one hundred twenty-four thousand, seven hundred seventy-eight".